Re: [PATCH 1/2] KVM: vmx/pmu: Fix dummy check if lbr_desc->event is created

[Paolo Bonzini]

On 23/02/21 18:15, Sean Christopherson wrote:
> If event
> creation fails in that flow, I would think KVM would do its best to create an
> event in future runs without waiting for additional actions from the guest.
>
> Also, this bug suggests there's a big gaping hole in the test coverage.  AFAICT,
> event contention would lead to a #GP crash in the host due to lbr_desc->event
> being dereferenced, no?

Yes, testing contention would use the tools/testing/selftests/kvm 
framework rather than just kvm-unit-tests.

Paolo